Scientists Use AFM to Image Electrocatalysis helmholtz_en microscopy
By Hussain AhmedMar 13 2023Reviewed by Megan Craig, M.Sc. When developing electrocatalysts effectively, a thorough understanding of the physical properties at the solid-liquid interface is necessary. Advancements in atomic force microscopy could enable the imaging of the height profile of nanostructures, as well as the electric current and frictional force at this interface.
Determining Properties of Solid-Liquid Interfaces The local features of solid-liquid interfaces impact the overall efficacy of important catalytic processes, such as the electro-catalytic conversion of carbon dioxide, hydrogen, and oxygen, in addition to battery-based electrolytic energy storage. Related StoriesCorrelative in situ analysis is crucial for examining the interactions between mechanical, electric, and electrochemical characteristics at length scales comparable with the distinctive interfacial features to solve these problems.
However, there is still much to explore with c-AFM, particularly in polar liquids related to electrocatalysis. To date, there have been no reports on using c-AFM imaging in polar liquids in conjunction with friction force imaging. "This allowed us to simultaneously determine the electrical conductivity, the mechanical-chemical friction and the morphological properties in situ ," emphasizes Christopher Kley, a co-author of the study.
Such results on solid-liquid interfaces help to optimize them in a targeted manner. The researchers also identified the local electrochemical environments that influence charge transfer at the interface.
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